initialize_db.py
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import os
import sys
import csv
import subprocess
import transaction
from getpass import getpass
from sqlalchemy import engine_from_config
from ziggurat_foundations.models.services.user import UserService
from pyramid.paster import (
get_appsettings,
setup_logging,
)
from pyramid.i18n import (
Localizer,
TranslationStringFactory,
Translations,
)
from ..models import (
DBSession,
Base,
)
from ..models.ziggurat import (
Group,
GroupPermission,
UserGroup,
User,
)
domain = 'initialize_db'
_ = TranslationStringFactory(domain)
my_registry = dict()
class MyLocalizer:
def __init__(self):
settings = my_registry['settings']
locale_name = settings['pyramid.default_locale_name']
here = os.path.abspath(os.path.dirname(__file__))
locale_dir = os.path.join(here, '..', 'locale')
translations = Translations.load(locale_dir, [locale_name], domain)
self.localizer = Localizer(locale_name, translations)
def translate(self, ts):
return self.localizer.translate(ts)
def usage(argv):
cmd = os.path.basename(argv[0])
print('usage: %s <config_uri>\n'
'(example: "%s development.ini")' % (cmd, cmd))
sys.exit(1)
def read_file(filename):
f = open(filename)
s = f.read()
f.close()
return s
def alembic_run(ini_file, url):
bin_path = os.path.split(sys.executable)[0]
alembic_bin = os.path.join(bin_path, 'alembic')
command = (alembic_bin, 'upgrade', 'head')
s = read_file(ini_file)
s = s.replace('{db_url}', url)
f = open('alembic.ini', 'w')
f.write(s)
f.close()
subprocess.call(command)
os.remove('alembic.ini')
def get_file(filename):
base_dir = os.path.split(__file__)[0]
fullpath = os.path.join(base_dir, 'data', filename)
return open(fullpath)
def ask_password(name):
localizer = MyLocalizer()
data = dict(name=name)
t_msg1 = _(
'ask-password-1', default='Enter new password for ${name}: ',
mapping=data)
t_msg2 = _(
'ask-password-2', default='Retype new password for ${name}: ',
mapping=data)
msg1 = localizer.translate(t_msg1)
msg2 = localizer.translate(t_msg2)
while True:
pass1 = getpass(msg1)
if not pass1:
continue
pass2 = getpass(msg2)
if pass1 == pass2:
return pass1
ts = _('Sorry, passwords do not match')
print(localizer.translate(ts))
def restore_csv(table, filename):
q = DBSession.query(table)
if q.first():
return
with get_file(filename) as f:
reader = csv.DictReader(f)
for cf in reader:
row = table()
for fieldname in cf:
val = cf[fieldname]
if not val:
continue
setattr(row, fieldname, val)
DBSession.add(row)
return True
def append_csv(table, filename, keys):
with get_file(filename) as f:
reader = csv.DictReader(f)
filter_ = dict()
for cf in reader:
for key in keys:
filter_[key] = cf[key]
q = DBSession.query(table).filter_by(**filter_)
found = q.first()
if found:
continue
row = table()
for fieldname in cf:
val = cf[fieldname]
if not val:
continue
setattr(row, fieldname, val)
DBSession.add(row)
def main(argv=sys.argv):
if len(argv) != 2:
usage(argv)
config_uri = argv[1]
setup_logging(config_uri)
settings = get_appsettings(config_uri)
my_registry['settings'] = settings
engine = engine_from_config(settings, 'sqlalchemy.')
Base.metadata.bind = engine
Base.metadata.create_all()
alembic_run('alembic.ini.tpl', settings['sqlalchemy.url'])
with transaction.manager:
if restore_csv(User, 'users.csv'):
DBSession.flush()
q = DBSession.query(User).filter_by(id=1)
user = q.first()
password = ask_password(user.user_name)
UserService.set_password(user, password)
append_csv(Group, 'groups.csv', ['group_name'])
restore_csv(UserGroup, 'users_groups.csv')